| 摘要 |
<p>A curable coating composition comprising a binder, which comprises: a silicon/hydroxyl component and a crosslinking component, said silicon/hydroxyl component comprising: (i) A silicon/hydroxyl reactive oligomer having a linear or branched cycloaliphatic moiety and at least two functional groups with at least one of said groups being a silicate, the remaining groups being hydroxyl groups; (ii) A silicon reactive oligomer having a linear or branched cycloaliphatic moiety and at least two functional groups being a silane, silicate or a combination thereof, and a hydroxy acrylic polymer, a hydroxy polyester, a silicon free reactive oligomer having a linear or branched cycloaliphatic moiety and at least two hydroxyl groups, or a combination thereof; or (iii) A combination of said (i) and (ii), where: the silicon/hydroxyl reactive oligomer, silicon reactive oligomer and silicon free reactive oligomer all having a GPC weight average molecular weight not exceeding 4,000 and a polydispersity not exceeding about 1.7; and the crosslinking component comprising a blocked crosslinker or an unblocked crosslinker where, the blocked or unblocked crosslinkers being provided with at least two isocyanate groups and where, the ratio of equivalents of isocyanate per equivalent of hydroxyl groups is in the range of from 0.3/1 to 2.0/1.</p> |
